Struct SlidingMinAccumulator 

pub struct SlidingMinAccumulator {
    min: ScalarValue,
    moving_min: MovingMin<ScalarValue>,
}

Fields

min: ScalarValue

moving_min: MovingMin<ScalarValue>

Implementations

impl SlidingMinAccumulator

pub fn try_new( datatype: &DataType, ) -> Result<SlidingMinAccumulator, DataFusionError>

Trait Implementations

impl Accumulator for SlidingMinAccumulator

fn state(&mut self) -> Result<Vec<ScalarValue>, DataFusionError>

Returns the intermediate state of the accumulator, consuming the intermediate state.

fn update_batch( &mut self, values: &[Arc<dyn Array>], ) -> Result<(), DataFusionError>

Updates the accumulator’s state from its input.

fn retract_batch( &mut self, values: &[Arc<dyn Array>], ) -> Result<(), DataFusionError>

Retracts (removed) an update (caused by the given inputs) to accumulator’s state.

fn merge_batch( &mut self, states: &[Arc<dyn Array>], ) -> Result<(), DataFusionError>

Updates the accumulator’s state from an Array containing one or more intermediate values.

fn evaluate(&mut self) -> Result<ScalarValue, DataFusionError>

Returns the final aggregate value, consuming the internal state.

fn supports_retract_batch(&self) -> bool

Does the accumulator support incrementally updating its value by removing values.

fn size(&self) -> usize

Returns the allocated size required for this accumulator, in bytes, including Self.

impl Debug for SlidingMinAccumulator

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.